its probably not the song, if its daytime then there is a good chance they are both sick and you need to take them to a vet, if its night then its normal. i could be the song though you never know

Yes

I owned two yellow lovebirds. They hated my family, well they were afraid of us. I remember once I was on my dad's PC and since their cage is right next to the PC, they heard me play Hide and Seek by Imogen Heap, then they went to sleep. I woke them up, and then I experimented with the song again, and they fell asleep ... again. So I did it 5 more times, and they fell asleep. Why is this so weird to be the first harmonical song that birds sleep to? Is it the harmony of the song?